Does anyone here have a wireing harness map? more specifically, i need to know exactly what wire do what on the large driver side plug the goes nder the dash, ot one the ecm side, i have put the 2.8 in my gmc jimmy, plumbed it,and now i am just left with the wireing, it may already run, i just need to know before i try to start it. Thanks in advance Matt manglos..oh btw the car theengine came ot of is a 1985 Pontiac Firebird 2.8 v6 automatic

 

I have a diagram (2 to be exact) but have no scanner to help you. They are in the chiltons and haynes manuals you can get at autozone, orileys, advanced, pepboys, etc.

 

I believe the driver's side plug on the f-body has nothing to do with the engine. All the ECM wires from the main engine harness go through the passenger-side's passthru and into the ECM. A third part of the fbody's driver's side connector is the lights harness.

 

hey widow maker, did you post on mys10.com also?? If so I replyed on their

 

Y yes.... actually I did, ok fuel tanks are the same from 82-93 with fuel inj or carburation, height wise, the fuel pumps are the same and bolt in wise agian they are the same..... sooo what i am going to do is buy the frebird fuel pump 65 PSI 20GPH, and install it into the fuel tank.... this shoudl take care of any problems that i may have run into, the tbi s10 2.8 pumps only put out 15 ps but again 20 GPH. I will keep you posted as to what happens.... and for whoever said that the left side didnt have to do with the engine, but the dash rather you are 95% right, the fuel pump circiut and ecm circuit still run through there and mount/plug into the stock fuse panel, this is why i need a map of what wire are nessesary, i can put in my own waterproof fuses and leave it in the engine bay, but i need to know what fuses need to installed, what wires to fuse to what ire and the like. I also need to run the wires back to the fuel pump....... again through the left side engine plug through the firewall.